Question: A patient came in for a GDX and visual field (VF) tests. During the same visit, the ophthalmologist put in temporary plugs. Can we get paid for all services on the same day? I know the office visit needs a modifier. Do I need to put one on the GDX & VF, too?

Answer: Provided the ophthalmologist made the decision to perform the tests during this visit, you may bill for the office visit and the testing. You should be able to get paid for all services using four modifiers — one on the office visit as you indicated, one on each plug code, and one on the GDX. You do not need a modifier on the VF (92081-92083, Visual field examination, unilateral or bilateral, with interpretation and report …).

Warning: If the patient was scheduled to come in for the GDX and VF testing as the result of a previous office...